MESON Chess Problem Database
Problem Display
PID: 90192 (2n5/4p3/4Q2p/3pbp1K/3pkp2/3R1R2/2PpPPPN/3q4 w - - 0 1)
Wielgos, Oskar
Die Schwalbe, 1984
#2
9 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Tries
- 1.Sg4?
- threat
- 2.Qxe5#
- 1...fxg4
- 2.Qg6#
- 1...Qh1+!
- threat
- 1.Rde3+?
- 1...fxe3
- 2.Qxf5#
- 1...dxe3!
- 1...fxe3
- 1.Rfe3+?
- 1...dxe3
- 2.Qxd5#
- 2.f3#
- 1...fxe3!
- 1...dxe3
- 1.c3?
- threat
- 2.Rxd4#
- 1...dxc3
- 2.Qxd5#
- 1...Qa4!
- threat
- 1.c4?
- threat
- 2.Qxd5#
- 1...dxc4
- 2.Qc6#
- 1...Sb6!
- threat
- 1.g3?
- threat
- 2.Rxf4#
- 1...fxg3
- 2.Qxf5#
- 1...Qxe2!
- threat
- 1.g4?
- threat
- 2.Qxf5#
- 1...fxg4
- 2.Qg6#
- 1...Sd6!
- threat
- 1.Sg4?
- Keys
- 1.e3!
- threat
- 2.Rxd4#
- 1...Qxf3+
- 2.gxf3#
- 1...dxe3
- 2.Qxd5#
- 1...fxe3
- 2.Qxf5#
- 1...Qa1
- 2.Rxf4#
- threat
- 1.e3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- Tries
- Try
- S(E);
- Threat
- QAR1(I),XB(g)
- Vars
- P(h);OGATEB,XS(E)::QAB(I)
- Refutation
- Q(a);CHECK
- Try
- R(F);CHECK
- Vars
- P(e);XR(F)::QAB1(I),XP(h)
- Refutation
- P(c);XR(F)
- Try
- R(G);CHECK,P_SPINP(B)
- Refutation
- P(e);XR(G)
- Try
- P(A);
- Threat
- R1(F),XP(c)
- Vars
- P(c);XP(A)::QAB1(I),XP(f)
- Refutation
- Q(a);
- Try
- P(A);
- Threat
- QAB1(I),XP(f)
- Vars
- P(f);OGATEB,XP(A)::QAB(I)
- Refutation
- S(k);
- Try
- P(D);
- Threat
- R1(G),XP(e)
- Vars
- P(e);XP(D)::QAB1(I),XP(h)
- Refutation
- Q(a);P_PINR(G),XP(B)
- Try
- P(D);
- Threat
- QAB1(I),XP(h)
- Vars
- P(h);OGATEB,XP(D)::QAB(I)
- Refutation
- S(k);
- Try
- Actual
- P(B);P_SPINR(G)
- Threat
- R1(F),XP(c)
- Vars
- Q(a);CHECK,OGATE,XR(G)::P(D),XQ(a)
- P(c);XP(B)::QAB1(I),XP(f)
- P(e);XP(B)::QAB1(I),XP(h)
- Q(a);N_PINR(G)::R1(G),XP(e)
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